The Fate of Iberia Add-on for Crusader Kings III (Windows) has 11 achievements worth 165 gamerscore.
Sleep with your best friend while having the "Ritualized Friendship" cultural tradition.
Embrace the Basque paganism faith during the Iberian struggle.
Use a friendship hook on a different-faith ruler involved in the Iberian struggle.
Bet a title on a strategy game match against another ruler.
As an Iberian culture character, control all of the Caucasian Iberia region.
Convert all of Iberia to the Mozarabic faith.
End the Iberian struggle through means of force.
End the Iberian struggle by setting your differences aside.
End the Iberian struggle through compromise.
Start as an uninvolved character, become involved and end the Iberian struggle.
Create and rule the kingdom of Valencia as an heir to El Cid.